- Cover the following material to motivate this point:
- Tell students that computers only store 0s and 1s.
- Explain that we can interpret 0s and 1s as letters or pictures and a lot of other things!
- Show students an ascii table.
- Have them convert letters to 0s and 1s.
- Explain that the computer interprets a 0 as a 0. It looks exactly the same whether it’s a part of a letter or a part of a picture.
- Next, explain the need to specify how the computer interpret 1s and 0s.
- This is why it is so important to define the types of variables.
- For example, the computer will know to interpret 1s and 0s representing the variables x and y differently because of their type declarations.
int x = 10;
char y = 'a';